Machine for forming blanks for tufting-buttons.



'No'. 780,570. PATENTED JAN.2'4, 1905.

. P. MARGGRAFF. v v I MACHINE FOR FORMING BLANKS FOR TUPTING BUTTONS.

APPLICATION I'ILED SEPT. 12, 1902; w

. lwltneooeo Patented January 24, 1905.

UNITED STATES PATENT OFFICE.

FREDRICK MARGGRAFF, OF AUGUSTA, KENTUCKY, ASSIGNOE TO THE F. A. NEIDER COMPANY, OF AUGUSTA, KENTUCKY, A CORPORATION OF KENTUCKY.

MACHINE FOR FORMING BLANKS FOR TUFTING-BUTTONS.

SPECIFICATION forming part of Letters Patent N0. 780,570, dated January 24, 1905.

Application filed September 12, 1902. Serial No. 123,067.

ing or weakening the metal at the base of the prongs.

In the drawings forming part of this specification, Figure 1 is a. plan view of the machine embodylng my invention, taken upon line o o of Fig. 2. Fig. 2 1s a vertical longitudinal sectional View of the same, taken upon- .line 2 z of Fig. 1. Fig. 3 is a transverse sectional view of the same, taken upon line 20 w of Fig. 1. of one of the rollers which are mounted in the female die. Fig. 5 is a plan view of one of the blanks before it has been operated upon by the machine embodying my invention. Fig. 6 is a perspective view of the blank after it has passed through my machine.

Referring to the parts, which are indicated by similar reference letters wherever they occur throughout the various views, female die A has formed therein a longitudinal vertical way the central portion a of which is of the same shape in horizontal section as the central part B of the blank which is fed through the machine, and upon each side of the portions a are narrow portions 60 a in longitudinal alinement with each other. Mounted in die A are two rollers, each of which consists of a disk C and a shaft 0, the shafts and the disks being preferably formed integral. The rollers are mounted in the die, with the disk C in the portions (0 a and at a distance apart'equal to thedistance between the outer faces of the prongs Z) 6 of the tufting-button blank as it comes from my machine.

Fig. 4 is a detail perspective View The shafts c are journaled in the die A, so as to be readily rotatable therein. I prefer to make the die in two parts each having horizontal perforations to receive the shafts c, the parts being held together by pins (0 a after the rollers have been placed in position. Upon top of the die a retainer-plate A is placed, which has a central perforation a of the same contour as the blank which is fed to the machine, as shown in Fig. 5. The blank is laid in perforation a and then punch D descends to carry it downward through the die. Punch D has upon its sides vertical grooves cl cl of a width slightly greater than rollers in conjunction with the partition 6Z turn the prongs upward at a right angle to the back, as shown in Fig. 6. then in shape to receive the cap which will put it in shape for the market. While in operation the rollers rotate, so that the metal is not drawn at the base of the-prongs, but retains its original thickness. The metal at the base of the prongs is likewise not subjected to any great pressure and its molecules are not disturbed. The metal, therefore, at the base of the prongs is with my machine in no manner weakened. This is a great desideraturn in tufting-buttons, since the part of the prong which is subjected to the greatest strain is'its base.

I have shown my invention in the simplest form that is known to me, and'it is obvious that many mere mehcanical changes might be made therein without departing from the spirit or scope of my invention,- and I therefore do not wish to be limited to the details shown; but

The blank is l which is similar in shape to the back of the blank, rollers mounted in the die and projecting into the way at diametrically opposite sides thereof, and a punch whose cross-section is similar in outline to the passage formed by the way and the rollers to pass down through said passage.

FEE DRICK M ARG (-i-RA Eli.

Vi tn esses:

ISAAC RnYNoLDs, FRED A. Nnnmn. 

